Bell & Gossett steel impeller, 3-3/8" outside diameter, for B&G Series HV manufactured between January 1951 and December 1976, as well as, Series 2 pumps manufactured between January 1951 and June 1976. Impellers are installed on the end of the pump shaft, which spins the impeller in turn pumping water, or other liquid, throughout your system.Replaces P/N P-2-Z-835, P-65040Used On:102308 HV Booster IB (SEPT 76-DEC 76)102X10 2 IN Booster IB (JAN 51-JUNE 76)102X13 HV Booster IB (JAN 51-AUG 75)REPLACES BELL & GOSSETT P2Z-835, ARMSTRONG 816556-011